Journal
PHYSICAL REVIEW LETTERS
Volume 103, Issue 23, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.237001
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Funding
- IAS-HKUST
- NSF [DMR0804040]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [804040] Funding Source: National Science Foundation
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We describe experimental signatures of Majorana fermion edge states, which form at the interface between a superconductor and the surface of a topological insulator. If a lead couples to the Majorana fermions through electron tunneling, the Majorana fermions induce resonant Andreev reflections from the lead to the grounded superconductor. The linear tunneling conductance is 0 (2e(2)/h) if there is an even (odd) number of vortices in the superconductor. Similar resonance occurs for tunneling into the zero mode in the vortex core. We also study the current and noise of a two-lead device.
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